Milligamma
毫微克, 10的-9次方
🗣️ 情景例句
Work harder and practice more.
要更加努力地学习，更加勤奋地操练。
I often watch TV at night.
我常常在晚上看电视。
But just before the competition closed,
但就在竞赛截止时间将到之际，